/*
 * SVG Salamander
 * Copyright (c) 2004, Mark McKay
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or 
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 *   - Redistributions of source code must retain the above 
 *     copyright notice, this list of conditions and the following
 *     disclaimer.
 *   - Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials 
 *     provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE. 
 * 
 * Mark McKay can be contacted at mark@kitfox.com.  Salamander and other
 * projects can be found at http://www.kitfox.com
 */

package com.kitfox.svg.app.data;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.geogebra.common.jre.util.Base64;

import com.kitfox.svg.SVGConst;

/**
 *
 * @author kitfox
 */
public class Handler extends URLStreamHandler {
	class Connection extends URLConnection {
		String mime;
		byte[] buf;

		public Connection(URL url) {
			super(url);

			String path = url.getPath();
			int idx = path.indexOf(';');
			mime = path.substring(0, idx);
			String content = path.substring(idx + 1);

			if (content.startsWith("base64,")) {
				content = content.substring(7);
				try {
					buf = Base64.decode(content);
				} catch (Exception e) {
					Logger.getLogger(SVGConst.SVG_LOGGER).log(Level.WARNING,
							null, e);
				}
			}
		}

		@Override
		public void connect() throws IOException {
		}

		@Override
		public String getHeaderField(String name) {
			if ("content-type".equals(name)) {
				return mime;
			}

			return super.getHeaderField(name);
		}

		@Override
		public InputStream getInputStream() throws IOException {
			return new ByteArrayInputStream(buf);
		}

		// public Object getContent() throws IOException
		// {
		// BufferedImage img = ImageIO.read(getInputStream());
		// }
	}

	@Override
	protected URLConnection openConnection(URL u) throws IOException {
		return new Connection(u);
	}

}
